4.89ct Sapphire (Cabochon, 10×8.3mm, Blue) vs 2.23ct Spinel (Cabochon, 7.2×6.6mm, Purple)
Quick summary: When looked from above (face-up position), 4.89ct Sapphire (10×8.3mm, cabochon cut) appears 75% larger than 2.23ct Spinel (7.2×6.6mm, cabochon cut). See below how they compare side-by-side on a ring and finger.
| 4.89ct Sapphire (cabochon cut) |
vs
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2.23ct Spinel (cabochon cut) |
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blue |
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| 10×8.3 mm | 7.2×6.6 mm | |
| actual size | ||
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Actual size is set for screen
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Ring:
Skin tone:
Ring width: 3.0 mm
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64 mm |
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Actual sizes of
4.89ct Sapphire Cabochon (10×8.3mm, Blue)
and
2.23ct Spinel Cabochon (7.2×6.6mm, Purple)
as they would appear on a ring and finger.
Adjust the ring and finger size to get an idea of how these gemstones would look on your finger.
Where to buy?
For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile
Face-up Size
All things being equal, Sapphire will face-up smaller than Spinel for a given
carat weight, because it has higher specific gravity
(4 vs. 3.6 - this means it's "heavier" compared to Spinel of the same size). Face-up size also depends heavily on the proportions of the cut.
Face-up area is a measure of the size of the gem when viewed from above (as set in a ring). It tells you how big the gem is at the girdle plane.
Face-up area is a measure of the size of the gem when viewed from above (as set in a ring). It tells you how big the gem is at the girdle plane.
| 4.89 Ct Sapphire (Cabochon) | 2.23 Ct Spinel (Cabochon) | |
| 10×8.3 mm | vs | 7.2×6.6 mm |
| 68.06 mm² | 38.97 mm² |
| 4.89ct Sapphire Cabochon (10×8.3mm) | |
| 2.23ct Spinel Cabochon (7.2×6.6mm) | |
| Difference: 75% (29.09 mm²) |
4.89ct Sapphire (Cabochon, 10×8.3mm) has approx. 75% more face-up area than 2.23ct Spinel (Cabochon, 7.2×6.6mm).
Popular comparisons:
- 4.89ct Sapphire (Cabochon, Blue, 10 x 8.3) vs. 4.13ct Sapphire (Cabochon, Blue, 9.8 x 7.5)
- 4.89ct Sapphire (Cabochon, Blue, 10 x 8.3) vs. 2.13ct Sapphire (Cabochon, Blue, 8.3 x 6.8)
- 4.89ct Sapphire (Cabochon, Blue, 10 x 8.3) vs. 2.23ct Ruby (Cabochon, Light Red, 7.2 x 6.6)
- 4.89ct Sapphire (Cabochon, Blue, 10 x 8.3) vs. 2.23ct Ruby (Cabochon, Red, 7.2 x 6.6)
- 4.89ct Sapphire (Cabochon, Blue, 10 x 8.3) vs. 2.23ct Sapphire (Cabochon, Blue, 8.3 x 6.7)
- 4.89ct Sapphire (Cabochon, Blue, 10 x 8.3) vs. 2.23ct Sapphire (Cabochon, Purple, 7.6 x 6.6)
- 4.89ct Sapphire (Cabochon, Blue, 10 x 8.3) vs. 1.97ct Sapphire (Cabochon, Light Purple, 7.9 x 6.73)
- 4.89ct Sapphire (Cabochon, Blue, 10 x 8.3) vs. 2.13ct Sapphire (Cabochon, Blue, 8.6 x 6.6)